Exchange executives, long shielded from legal scrutiny in the U.S., have been put on notice that may be changing after federal regulators fined CBOE Holdings Inc. $6 million for unprecedented lapses in supervision.

OptionsXpress Inc., a unit of U.S. brokerage Charles Schwab Corp., and its former chief financial officer helped to facilitate sham transactions that violated U.S. securities laws, an administrative court ruled.

Nasdaq OMX Group Inc. agreed to pay $10 million to settle Securities and Exchange Commission charges that its mishandling of Facebook Inc.’s initial public offering last year was a violation of securities laws.

U.S. stocks rose, erasing earlier losses, after Federal Reserve Bank of St. Louis President James Bullard said the central bank should continue its bond buying to boost growth that is slower than expected.

U.S. stocks rose, as the Standard & Poor’s 500 Index rebounded to within four points of its record, after orders for durable goods climbed more than forecast in February and home prices increased the most since June 2006.